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Automatic composition apparatus, automatic composition method and storage medium

a composition apparatus and composition technology, applied in the direction of gearworks, toys, instruments, etc., can solve the problems of difficult control for users, inability to ensure whether the generated melody is an optimal solution, etc., and achieve the effect of optimizing the melody (the tone sequence)

Active Publication Date: 2016-05-26
CASIO COMPUTER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is a method for automatically composing music by shifting the pitch of individual notes in a phrase and calculating the matching level between the pitch-shifted notes and pre-designated chord progression data. The resulting melody is generated based on the selected pitch-shifted notes and the calculated matching level. This method ensures an optimal melody with respect to chords and scales.

Problems solved by technology

However, in one of the above described technologies according to the related art, although there is a means for extracting music information from reference source melodies and generating a melody, whether the generated melody is an optimal solution is not assured.
Nevertheless, this system is also partially optimal and is difficult for a user to control.

Method used

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  • Automatic composition apparatus, automatic composition method and storage medium
  • Automatic composition apparatus, automatic composition method and storage medium
  • Automatic composition apparatus, automatic composition method and storage medium

Examples

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Embodiment Construction

[0040]Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a block diagram illustrating an embodiment of an automatic composition apparatus 100. The automatic composition apparatus 100 includes a motif input unit 101, a chord-progression selecting unit 102, an accompaniment / chord-progression database (hereinafter, referred to as “DB”) 103, a rule DB 104, a melody generating unit 105, a phrase set DB 106, and an output unit 107.

[0041]The motif input unit 101 receives any one of characteristic melody parts to define a tune, such as an A melody, a B melody, and a C melody (a refrain melody), as an input motif 108, from a user. The input motif 108 is any one of a motif A which is the motif of an A melody, a motif B which is the motif of a B melody, and a motif C which is the motif of a C melody, and has, for example, the length of two measures of the beginning of each melody part. The motif input unit 101 ...

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Abstract

An automatic composition apparatus includes a processing unit. The processing unit performs a note pitch shift process, a matching-level calculating process and a melody generating process. The note pitch shift process performs pitch shift on pitches of individual note data items included in an input phrase. The matching-level calculating process calculates a matching level between a phrase including note data items subjected to the pitch shift and a designated chord progression data item, with reference to a plurality of note connection rules each of which defines a connection relation of consecutive note types, if the pitch shift is performed. The melody generating process generates a melody based on the phrase which includes the note data items subjected to the pitch shift and which is selected based on the calculated matching level.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is based upon and claims the benefit of priority from the prior Japanese Patent Application No. 2014-235236, filed on Nov. 20, 2014, and the entire contents of which are incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to an automatic composition apparatus, an automatic composition method and a storage medium.[0004]2. Description of the Related Art[0005]There is known a technology for automatically compose music based on a motif melody consisting of a plurality of note data items. In the related art, for example, the following technology is known (for example, a technology disclosed in JP-A-2002-032080). If a certain chord progression is selected from a database retaining chord progressions of a specific key, and a motif is input in a certain key, a motif key is detected from the input motif. Based on the detected motif key, data on the chord pr...

Claims

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Application Information

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IPC IPC(8): G10H1/00
CPCG10H1/0025G10H2220/015G10H2210/325G10H2210/111G10H1/38G10H2210/145G10H2210/151G10H2210/335G10H2210/576G10H2210/611
Inventor MINAMITAKA, JUNICHI
Owner CASIO COMPUTER CO LTD
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